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/*
* button.c
*
* Part of gwm, the Gratuitous Window Manager,
* by Gary Wong, <gtw@gnu.org>.
*
* Copyright (C) 2009 Gary Wong
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of version 3 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* $Id$
*/
#include <config.h>
#include <assert.h>
#include <xcb/xcb.h>
#include "gwm.h"
#include "button.h"
#include "window-table.h"
#define BUTTON_SIZE 12 /* size of buttons in title bar; excludes X border */
#define BUTTON_X_BORDER 1
extern int button_size( struct gwm_window *window, int include_x_border ) {
assert( window->type == WINDOW_BUTTON );
return BUTTON_SIZE + ( include_x_border ? BUTTON_X_BORDER << 1 : 0 );
}
extern int button_xb( struct gwm_window *window ) {
assert( window->type == WINDOW_BUTTON );
return BUTTON_X_BORDER;
}
static int button_active;
static void set_button_active( struct gwm_window *window, int new ) {
uint32_t n;
if( new == button_active )
return;
n = gwm_screens[ window->screen ].pixels[ ( button_active = new ) ?
COL_BUTTON_ACTIVE :
COL_BUTTON_INACTIVE ];
xcb_change_window_attributes( c, window->w, XCB_CW_BACK_PIXEL, &n );
queue_window_update( window, 0, 0, button_size( window, FALSE ),
button_size( window, FALSE ), FALSE );
}
static void button_button_press( struct gwm_window *window,
xcb_button_press_event_t *ev ) {
if( !pointer_demux ) {
/* Initiate grab. */
pointer_demux = window->w;
set_button_active( window, TRUE );
}
if( ( window->u.button.frame->u.frame.child->u.managed.protocols &
PROTOCOL_DELETE_WINDOW ) && ( ev->detail == 3 ||
( ev->state & XCB_BUTTON_MASK_3 ) ) )
/* Button 3 will kill the client, even if it supports WM_DELETE_WINDOW.
Change to CURSOR_DESTROY to indicate the distinction. */
xcb_change_active_pointer_grab( c, cursors[ CURSOR_DESTROY ],
ev->time, XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_ENTER_WINDOW |
XCB_EVENT_MASK_LEAVE_WINDOW );
}
static void button_button_release( struct gwm_window *window,
xcb_button_release_event_t *ev ) {
if( !pointer_demux )
return;
if( final_release( ev ) ) {
/* Final button released; grab terminates. */
if( button_active ) {
if( ev->detail == 3 || !( window->u.button.frame->u.frame.child->
u.managed.protocols &
PROTOCOL_DELETE_WINDOW ) )
xcb_kill_client( c, window->u.button.frame->u.frame.child->w );
else {
xcb_client_message_event_t msg;
struct gwm_window *frame = window->u.button.frame;
msg.response_type = XCB_CLIENT_MESSAGE;
msg.format = 32;
msg.sequence = 0;
msg.window = frame->u.frame.child->w;
msg.type = atoms[ ATOM_WM_PROTOCOLS ];
msg.data.data32[ 0 ] = atoms[ ATOM_WM_DELETE_WINDOW ];
msg.data.data32[ 1 ] = ev->time;
msg.data.data32[ 2 ] = 0;
msg.data.data32[ 3 ] = 0;
msg.data.data32[ 4 ] = 0;
xcb_send_event( c, FALSE, frame->u.frame.child->w, 0,
(char *) &msg );
}
set_button_active( window, FALSE );
}
pointer_demux = XCB_NONE;
} else if( ev->detail == 3 && ( window->u.button.frame->u.frame.child->
u.managed.protocols &
PROTOCOL_DELETE_WINDOW ) )
/* Button 3 released; we'll no longer kill the client. Remove
the temporary CURSOR_DESTROY. */
xcb_change_active_pointer_grab( c, XCB_NONE, ev->time,
XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_ENTER_WINDOW |
XCB_EVENT_MASK_LEAVE_WINDOW );
}
static void button_enter_notify( struct gwm_window *window,
xcb_enter_notify_event_t *ev ) {
if( !pointer_demux )
return;
if( ev->event == window->w )
set_button_active( window, TRUE );
}
static void button_leave_notify( struct gwm_window *window,
xcb_leave_notify_event_t *ev ) {
if( !pointer_demux )
return;
if( ev->event == window->w )
set_button_active( window, FALSE );
}
const event_handler button_handlers[ NUM_EXTENDED_EVENTS ] = {
NULL, /* Error */
NULL, /* Reply */
NULL, /* KeyPress */
NULL, /* KeyRelease */
(event_handler) button_button_press,
(event_handler) button_button_release,
NULL, /* MotionNotify */
(event_handler) button_enter_notify,
(event_handler) button_leave_notify,
NULL, /* FocusIn */
NULL, /* FocusOut */
NULL, /* KeymapNotify */
NULL, /* Expose */
NULL, /* GraphicsExpose */
NULL, /* NoExposure */
NULL, /* VisibilityNotify */
NULL, /* CreateNotify */
NULL, /* DestroyNotify */
NULL, /* UnmapNotify */
NULL, /* MapNotify */
NULL, /* MapRequest */
NULL, /* ReparentNotify */
NULL, /* ConfigureNotify */
NULL, /* ConfigureRequest */
NULL, /* GravityNotify */
NULL, /* ResizeRequest */
NULL, /* CirculateNotify */
NULL, /* CirculateRequest */
NULL, /* PropertyNotify */
NULL, /* SelectionClear */
NULL, /* SelectionRequest */
NULL, /* SelectionNotify */
NULL, /* ColormapNotify */
NULL, /* ClientMessage */
NULL, /* MappingNotify */
NULL, /* (synthetic) */
NULL, /* RRScreenChangeNotify */
NULL /* ShapeNotify */
};
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